2. A web search engine is a software system that is designed to search
for information on the World Wide Web. The search results are
generally presented in a line of results, often referred to as search
engine results pages (SERPs). The information may be a mix of web
pages, images and other types of files. Some search engines also mine
data available in databases or open directories. Unlike web directories,
which are maintained only by human editors, search engines also
maintain real-time information by running an algorithm on a web
crawler.
3. Internet search engines themselves predate the debut of
the Web in December 1990. The Who is user search dates
back to 1982 and the Know but Information Service multi-
network user search was first implemented in 1989. The
first well documented search engine that searched
content files, namely FTP files was Archie, which debuted
on 10 September 1990.
4. • Google
No need for further introductions. The search engine giant holds the first place in
search with a stunning difference of 66% from second in place Bing.
• Bing
Bing is Microsoft’s attempt to challenge Google in the area of search, but despite their
efforts they still did not manage to convince users that their search engine can
produce better results than Google.
• Yahoo
Since October 2011 Yahoo search is powered by Bing. Yahoo is still the most popular
email provider and according to reports holds the fourth place in search.
• Ask.com
Formerly known as Ask Jeeves, Ask.com receives approximately 0.05% of the search
share. ASK is based on a question/answer format where most questions are answered
by other users or are in the form of polls.
It also has the general search functionality but the results returned lack quality
compared to Google or even Bing and Yahoo.
5. • AOL.com
According to netmarket share the old time famous AOL is still
in the top 10 search engines with a market share that is close
to 0.04%. The AOL network includes many popular web sites
like engadget.com, techchrunch.com and the
huffingtonpost.com.
• Internet Archive
Archive.org is the internet archive search engine. You can use
it to find out how a web site looked since 1996. It is very
useful tool if you want to trace the history of a domain and
examine how it has changed over the years.
• DuckDuckGo
Has a number of advantages over the other search engines. It
has a clean interface, it does not track users, it is not fully
loaded with ads and has a number of very nice features
6. Generally there are three basic components of a search engine as
listed below:
1. Web Crawler
2. Database
3. Search Interfaces
• Web crawler
It is also known as spider or bots. It is a software component that
traverses the web to gather information.
• Database
All the information on the web is stored in database. It consists of huge
web resources.
• Search Interfaces
This component is an interface between user and the database. It
helps the user to search through the database.